macOS 10.13 mistakenly enables a compatibility option on VS Code
and VS Code Insiders because their bundle IDs begin with
"com.microsoft.". This breaks native tabs.
Explicitly disable the compatibility patch using NSUserDefaults.
Note that Code-OSS is not affected by the bug, since its bundle ID
is "com.visualstudio.code.oss". To test this behaviour, change
darwinBundleIdentifier in product.json.